/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.googlecode.openbeans;
import com.googlecode.openbeans.Encoder;
import com.googlecode.openbeans.Expression;
import com.googlecode.openbeans.PersistenceDelegate;
import com.googlecode.openbeans.Statement;
import javax.swing.Box;
class SwingBoxPersistenceDelegate extends PersistenceDelegate {
@Override
protected Expression instantiate(Object oldInstance, Encoder enc) {
return new Expression(oldInstance, oldInstance.getClass(),
"createVerticalBox", null); //$NON-NLS-1$
}
@Override
@SuppressWarnings({ "nls", "boxing" })
protected void initialize(Class<?> type, Object oldInstance,
Object newInstance, Encoder enc) {
Box box = (Box) oldInstance;
Expression getterExp = new Expression(box.getAlignmentX(), box,
"getAlignmentX", null);
try {
// Calculate the old value of the property
Object oldVal = getterExp.getValue();
// Write the getter expression to the encoder
enc.writeExpression(getterExp);
// Get the target value that exists in the new environment
Object targetVal = enc.get(oldVal);
// Get the current property value in the new environment
Object newVal = null;
Box newBox = (Box) newInstance;
newVal = new Expression(newBox.getAlignmentX(), newBox,
"AlignmentX", null).getValue();
/*
* Make the target value and current property value equivalent in
* the new environment
*/
if (null == targetVal) {
if (null != newVal) {
// Set to null
Statement setterStm = new Statement(oldInstance, "setAlignmentX",
new Object[] { null });
enc.writeStatement(setterStm);
}
} else {
PersistenceDelegate pd = enc.getPersistenceDelegate(targetVal
.getClass());
if (!pd.mutatesTo(targetVal, newVal)) {
Statement setterStm = new Statement(oldInstance,
"setAlignmentX", new Object[] { oldVal });
enc.writeStatement(setterStm);
}
}
} catch (Exception ex) {
enc.getExceptionListener().exceptionThrown(ex);
}
}
}